It seems that when inserting to MSC_OPERATION_COMPONENTS in ODS load, the /*+ append */ hint has been used in R12(MSCLRTGB.pls MSC_CL_ROUTING_ODS_LOAD).On the other hand, in R11i , it is not in use. It is a conventional Insert for MSC_OPERATION_COMPONENTS only.

However, according to following mentions, Direct-load INSERT requires more space than conventional path INSERT.

Direct-load INSERT requires more space than conventional path INSERT, becausedirect-load INSERT ignores existing space in the free lists of the segment.For parallel direct-load INSERT into nonpartitioned tables, free blocks belowthe high water mark of the table segment are also ignored. Additional spacerequirements must be considered before using direct-load INSERT.

Therefore, it needs to modify the cause of this rapid bloated in R12.If the cause is the Direct-load INSERT, it has requested to add to the option to not to use it.